Well, it's sorta anonymized. The class is called CFrameWnd and not WinFrameWnd, and so on. Happened for all the libraries. Qt became R. .Net became NWin or something like that. COM became Bo. I forgot the codename for CORBA. MFC simply became Win.

It's probably a legal thing. Because if it's an attempt to keep us from recognizing the libraries and making judgements from prior experience with them, it's a pathetic one.